WIXLIB

2.12Water QualityThe distilled or mineral free water supplied to the autoclave shouldhave the physical characteristics and maximum acceptable level ofcontaminants indicated in the table below:Physical Characteristics and Maximum acceptable contaminantslevels in steam for sterlizersElementCondensate – allowable contentSilicium oxide. SiO2 0.1 mg/kgIron 0.1 mg/kgCadmium 0.005 mg/kgLeadRest of metals except iron,cadmium, leadChloride (Cl) 0.05 mg/kg 0.1 mg/kgPhosphate (P2O5) 0.1 mg/kgConductivity (at 20 C) 3 µs/cm 0.1 mg/kgpH value (degree of acidity)5 to 7Colourless clean withoutAppearancesedimentHardness (Σ Ions of alkaline earth) 0.02 mmol/lCompliance with the above data should be tested in accordancewith acknowledged analytical methods, by an authorizedlaboratory.Attention:The use of water for autoclaves that does not comply with the tableabove may have severe impact on the working life of the sterilizer andcan invalidate the manufacturer’s warranty.12

FRONT VIEWNo.DescriptionNo.Description1Reservoir water drain valve9Air relief valve2Ring for drain valve10Panel base3Door closing device11Front panel key board4Door switch (under door)12Printer5Autoclave cover13Main switch6Water reservoir cover14RS232 port cover7Water reservoir – assembly15Completion to panel8Safety valve13

REAR VIEW14

3.KEYBOARD (Keys and Display)FRONT PANEL KEYBOARDNote: See section 3.2 for a description of the Keyboard buttonsNote: See section 3.2 for a description of the Keyboard buttons15

3.1Indicator Light DescriptionProgramsIndicatorsShows the selected programSTARTShows the system is running a program.HEATThe system is currently in the Heating stage.STEThe system is currently in the Sterilization stage.EXHThe system is in the Exhaust stage.DRYThe system is in the Dry stage.FAILShows the system has failed as a result of either amalfunction, or the STOP key was pressed. Amessage is displayed on the screen; the reason forfailure.ADD WATERThis indicator lights if there is a lack of water in thereservoir.DOORCLOSEDThis indicator lights showing the door is in theclosed position.16

3.2Description and Functions of the Control Panel Keyboard3.2.1Program keys(1) Unwrapped Instruments(2) Wrapped Instruments(3) Glassware (slow exhaust, no drying)Pressing one of the above program keys determines thechosen program. The program parameters are displayed andthe program indicator lights.(4) Dry OnlyPressing this key allows inclusion of the Additional Dryingprocedure for a period of time determined by the operator.Time range is 0-99 minutes.3.2.2Other keys(5) TEMP.Pressing this key places the marker under the temperaturedisplayed on the display. To raise or lower the programsterilization temperature, press UP or DN keys. To store thenew value in the memory, as the nominal setting, completethe changing of the parameter by pressing TEMP. key again.The permitted temperature range for proper sterilization is250ºF-274ºF (121ºC-134ºC).Note:In no case should the temperature be set higher than 274ºF(134ºC)(6) STE. TIMEPressing this key places the marker under the sterilizationtime displayed on the display. To raise or lower the programsterilization time, press the UP or DN keys. To store the newvalue in the memory, as the nominal setting, complete thechanging of the parameter by pressing STE. TIME key again.Time range is 3-99 minutes.Note:It is important to properly coordinate the STE. TIMEwith the sterilization temperature.(7) DRY TIMEPressing this key places the marker under the drying timedisplayed on the display. To raise or lower the programdrying time, press the UP or DN keys. To store the new valuein the memory, as the nominal setting, complete the changingof the parameter by pressing DRY TIME key again. The timerange is 0-99 minutes. This key does not allow any change ofthe dry time for the Glassware program, for which it ispermanently set to 00 minutes.(8) UPPressing this key in combination with TEMP. (5), STE TIME(6), DRY Time (7) and CLOCK (9) increases these values.17

(9) DNPressing these keys in combination with TEMP. (5), STETIME (6), DRY Time (7) and CLOCK (9) lowers thesevalues.(10) CLOCKPressing the CLOCK programming key displays the date,with the cursor under the day. Pressing the UP or DN keyschanges the date. Pressing the CLOCK key again moves thecursor to the month, then year and then time (hour, minute,second). At this point the display shows the currently set dateand time. If no key is pressed during a 10-second interval, thesystem exits the clock-programming mode and returns to thecurrent program display.(11) Water InletPressing this key continuously, allows for manual filling of thechamber with water. Once the key is released the water pumpstops, the fill valve closes and water stops entering thechamber.(12) STARTPressing this key starts the sterilization (or DRY ONLY)process according to the selected program. Water flowsautomatically into the chamber, HEAT and STE. stagescommence and the respective LED indicator lights up.On completion of the sterilization program the Exhaust stagewill automatically begin, at the end of which a Drying stage(if previously programmed) will initiate. The respective LEDindicators light up, indicating which stage is operating. Onceall stages have been completed, the final indicatorextinguishes and the screen displays the “Cycle Finished”message.The process will not start if: The door is not closed and the DOOR CLOSEDindicator is off. The “DOOR UNLOCK” message is displayed.Note:Due to inherent elasticity of the door gasket, the CLOSEDOOR indicator may be illuminated green before acomplete seal is made between the door and the chamber.Therefore, in order to ensure the door is fully sealed,tighten the door bolt until ‘hand tight’. Do notovertighten the bolt as this may result in damage to thegasket. Should the autoclave fail to reach sterilizingtemperature/pressure, always check first if the door isfully sealed. If not, tighten the door further, as describedabove, until completely sealed. There is not enough water in the reservoir, (the redADD WATER indicator lights and the “ADDWATER” message is displayed).18

(13) STOPThis key issues the only command accepted by the systemduring the running of a program. Pressing this key for over 1second causes the program to immediately cease running andenters the EXHAUST stage, at the end of which the “MAN.STOP” message will be displayed. This key has no functionwhen the system is not in operation and its only use is tomanually stop a cycle. In normal working conditions oncompletion, the system automatically terminates the cycle,without use of this key.The STOP key does not function in EXH stage.3.3Description of the Display PanelThe display is comprised of 16 characters in one row and is divided into 4sections.The first section to the right, continuously shows the actual pressure withinthe chamber. This happens whether the system is running a program or not(provided the main power switch is turned on).The three other sections are designated to show the parameters of theselected program, or operating messages. When the system is running asterilization program, the sterilization temperature will be displayed abovethe TEMP key. Sterilization time will be displayed above the STE. TIMEkey and the drying time for the selected program will be displayed abovethe DRY TIME key.If the program is aborted as a result of parameters exceeding the controlledlimits (high, low pressure or temperature etc.) or a manual STOPcommand, a message is displayed on the left side of the screen. When amessage is displayed, pressing any key erases the message and redisplaysthe selected program screen.When the system is running a program, the screen displays the currenttemperature within the chamber and the remaining time for sterilization ordrying. The current real pressure inside the chamber is always displayed onthe screen.3.4Description of Displayed Messages and Safety MeasuresDoor Unlock Message is displayed and the DOOR CLOSED LEDindicator remains unlit, if the door is improperly closedwhen the START button is pressed. If the door accidentallyopens during any stage of the cycle, the same messageappears, the DOOR CLOSED LED indicator will turn off,and the system reacts as if the STOP key was pressed.Man. Stop Message will be displayed and the FAIL indicator will lightafter the STOP key is pressed for longer than 1 second.Add WaterMessage is displayed and the respective red LED indicatesinsufficient water in the water RESERVOIR. After water isadded to the reservoir, the START button must be pressedagain in order to start the required sterilization cycle.Water Inlet During the automatic water fill, the message WATERINLET is displayed as information to the operator.19

Message is displayed and sterilization does not start if theautoclave has not reached sterilization temperature afterheating for 50 minutes while in the Wrapped or Unwrappedprograms (80 minutes in the Glassware program).Possible causes: A clogged Air Jet (see cleaning the Air Jet sec 9.4). No power to the heating elements. Low line voltage delaying heat up.Low PresMessage is displayed, fail indicator lights, and the programis aborted if the pressure drops 4 psi (0.27 Bar) below therequired sterilization pressure.Possible causes: Insufficient water in the chamber (see Low Watermessage) A damaged heating element. A damaged pressure transducer.High Pres. Message is displayed, fail indicator lights up, and theprogram is aborted if the pressure rises 10 psi (0.6 Bar)above the required sterilization pressure.Possible causes: A damaged solid state relay. A damaged heating element.Low Temp. Message is displayed, fail indicator lights and cycle isaborted, if the temperature drops 2.5 C (4.5 F) below therequired sterilization temperature.Possible causes: Insufficient water in the chamber (see Low watermessage). Sterilization time has been set for too long a period. A bad temperature sensor.High Temp. Message is displayed, fail indicator lights and program isaborted if one of the following occurs: The temperature rises to 3 C (5 F) above the requiredsterilization temperature during the sterilization stage. This message appears during the HEAT stage, if thetemperature sensor is damaged.Possible causes: A damaged solid state relay. A damaged heating element. A damaged temperature sensor.Low Water Message is displayed if during the Water Inlet stageinsufficient water enters the chamber. In units with waterpumps, the pump will try three times to fill the chamberwith water, if unsuccessful the cycle is aborted and themessage LOW WATER is displayed.Low Heat20

Message is displayed, if during a normal heat up stage thesystem determines that there is insufficient water in thechamber to complete the cycle. This determination is madeby the combined input of two sensors, the Water Electrodeand the Safety Thermostat. Also, if a power failure occursduring the heat or sterilization stage after the power returns,the system will check the Water Electrode to see if there issufficient water in the chamber in order to resume the cycle.If not, the cycle will be aborted, the message LOW WATERwill be displayed, and the Cycle Fail indicator will light.Possible causes: A dirty or shorted Water Electrode. A clogged water pump or water pump filter. A clogged water line. Unit is improperly leveled. The Air Outlet Valve is stuck closed. A leaky door gasket, door bellows, solenoid valve, safetyvalve, or the air jet is allowing steam to escape at ahigher than normal rate. A power down has occurred and on power up the waterelectrode tip is dry.Power Dn. If a power failure occurred during the running of a cycle,when power resumes a POWER DN message is displayedfor several seconds; if a printer is installed it will printPOWER DN. In addition, the system automatically attemptsto complete the STERILIZATION stage if the followingparameters are met:a. If the temperature drop is less than 4.5 F (2.5 C),sterilization resumes automatically.b. If the temperature drop is more than 4.5 F (2.5 C),the cycle fails, POWER DN message is displayed andprinted and LOW TEMP message is displayed.c. If the pressure drop is more than 4 psi (0.27 Bar), thecycle fails, POWER DN message is displayed andprinted and LOW PRES message is displayed.If a power failure occurred during the HEAT stage, heatingresumes, provided enough water remains in the chamber. Ifnot, the cycle is aborted, the message “LOW WATER” isdisplayed. If a power failure occurs during the dry andexhaust stages, the unit will automatically resume operationonce the power is back on.If a power failure occurs during the GLASSWAREPROGRAM, the system does not allow fast exhaust (sincethe exhaust valve is normally closed).CYC Finish When the cycle has been completed successfully themessage CYC FINISH is displayed.21

4.STERILIZATION PROGRAMSThe autoclave offers 3 sterilization programs, at temperatures of up to 274 F(134 C), with or without a drying stage and 1 accessory (dry only) program.A. Three sterilization programs:1. Unwrapped instruments.2. Wrapped instruments and porous loads.3. Glassware.B. Accessory program:1. Dry onlyNote: The nominal data of the program (default settings) can be changed to fitthe needs of a particular office. This is done by means of the TEMP,STE.TIME, DRY TIME, keys in combination with the UP or DNkeys, as described in sec 3.2.2.4.1PROGRAM 1. Unwrapped InstrumentsFor unwrapped instruments and materials, when the manufacturerrecommends autoclaving at temperatures between 250 F and 274 F(121 C and 134 C) no preset drying stage required.Nominal parameters default settings Sterilization temperature: 273 F (134 C). Sterilization time: 3 minutes. Dry time: none.Operations Sequence Heating by actuation of electrical heaters until the sterilizationtemperature is reached. Sterilization temperature is maintained constant for the presetsterilization time. Fast exhaust, steam is exhausted out of the chamber at a fast rate untilpressure drops to zero.TEMPERATUREPRESSURE (kpa)Note:The sterility of instruments processed in unwrapped cycles cannot bemaintained if exposed to a non-sterile environment.Ambient Pressureand TemperatureTIMEt1t2 Pressure Temperature22t3t1 Steam generation staget2 Sterilization staget3 Fast exhaust stage

4.2PROGRAM 2. Wrapped Instruments and Porous LoadsFor wrapped instruments and materials, when the manufacturerrecommends autoclaving at temperatures between 250 F and 274 F(121 C and 134 C) with a drying stage.Nominal parameters default settings Sterilization temperature: 273 F (134 C). Sterilization time: 7 minutes. Dry time: 30 minutes.Operations sequence: Sterilization temperature is maintained constant for the presetsterilization time. Fast exhaust, steam is

OPERATION & MAINTENANCE MANUAL Electronic Tabletop Autoclaves Models EZ9, EZ10, EZ10K Cat. No. MAN205-0263001EN Rev. E Tuttnauer USA Co., Ltd., 25 Power Drive Hauppauge, NY 11788 U